Loudspeaker system, radio communications, intercom and walkie-talkies cut down time required to process cars in Union Pacific freight yard at Denver, Colo; new communications include 78 talk back and paging speakers, intercoms with six offices, and yard radio facilities for industrial checking and car switching. (see also Ry Age v 137 n 2 July 12 1954 p 60-2)
Communications streamline yard operations
Ry Signaling Communications
Railway Signaling and Communications ; 47 , n 5
1954
5 pages
Aufsatz (Zeitschrift)
Englisch
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